A cross-sectional study was conducted among 250 visitors aged 18 and above of outpatient clinics in the Galilee Medical Center (former Western Galilee Hospital): opthalmology, dental, otolaryngology (ENT) and orthopedic. The target population group for this study is adult residents of the Western Galilee area. The sampling is random. For the aims of the survey five sampling days were selected in each of the four outpatient clinics. On each of the sampling days all visitors of different outpatient clinics were offered to complete a self-administered structured questionnaire adapted specifically for the study.